Spring-actuated lubricator



April 3, 1928.

' 1,664,936 K. E. LYMAN SPRING ACTUATED LUBRICAT-OR Filed Jan.ll 1923 4 2 12 11 l5 l l A l l 'l 3 2376 591 10 19 18,

-in the tubular plunger member atented narran stares se. 192e.

Para

SPRING-ACTUATED LUBRICATOR.

Application filed January 11, 1923. Serial No. 612,093.

This invention relates to lubricators for high pressure lubrication, and more especially to lubricators having spring power for produc-ing the expelling force.

The main object of the invention is to provide a lubricator of simple and practical construction, which is conveniently and easily operated to exert a pushing force upon the power spring for con'ipressing the same, which spring will produce great pressure for expelling the contents of the lubricator.

ln order that the invention may be clearly understood, the same will be hereinafter fully described as illustrated in the accompanying drawings, and the novel features thereof will be distinctly pointed out in the appended claims. Y

AIn the drawings similar characters of reference are used to designate corresponding parts.

Figure 1 illustrates a longitudinal sectional View of a lubricator constructed in accordance with myv invention,

Fig. 2 isa similar view. the power spring having been compressed` and Fig. 3 is a. cross sectional view taken on line 3-3 of Fig. :2.

Referring to the drawings, 1 represents a tubular body or barrel having a closed rear end Q. and a cap 3 closing its forward end. Said cap is provided with threaded boss i for the attachment thereto ofa suitable nozzle having a spring pressed shut-olf valve not shown. Slidably mounted in the tubular body 1 is a tubular plunger n'ieinber 5 having a closed forward eud 6 to which is fixed a suitable cupped leather 7, and a rear end 8.

Arranged within the tubular plunger member 5 is a suitable power spring 9, which is adapted to force said plunger meniber forwardly for expelling the contents of the lubricator. ln order to conveniently and easily compress the plunger spring 9. a compression head is slidably mounted withadjacent its rear -end 8. and said head fixed to a threaded stem 11 mounted in a rod 12, which is provided with external threads at 13 for engaging the threads of an opening 1li in the rear end 2 of the tubular bony 1. rlhe stem 11 is preferably provided with lefthand threads and the rod 12 with righthand threads. The rear end 8 of the tubular plunger member 5 is provided with an opening of sufficient diameter to freely admit the threaded rod 12. The forward end of the externally threaded rod 12 is attached at 15 inA an enlarged recess of a cylindrical head 16 having across-arm 17 for serving as a handle to rotate said threaded rod. Fixe'd 'to the cylindrical head 16 by screws 18 is a tubular sleeve 19, which is adapted to enclose the threaded rod 12 andslide longitudinally over the tubular body 1 as said threaded rod advances. To prevent the compression head 10 and also the tubular plunger member 5 from rotating when the rod 12 is being turned by the handle 17, a pin 2O is fixed into said head and is adapted to slide in longitudinal slots 21 and 22 of such lengths in the tubular plunger member 5 and tubular body 1 respectively for permitting full movement of said head.

The power springv 9 is made somewhat greater in length than the distance between Vthe forward end 6 ofthe tubularl plunger member 5 and the compression head 10, so that when the tubular plunger is at the outer limit or beginning of its travel, as shown in Fig. 1, said power spring is under compression. The space 23 of the plunger body 1 in front of the cupped leather 7 is filled with grease or the like and the spring pressed shut-off valve in the nozzle is closed. The handle 17 is rotated, and this turns the threaded rod 12, which acting upon the threaded stem 11 forces the head forward thus compressing the coiled power spring 9 as shown in Fig. 2. As the threaded rod 12 advances, the sleeve 19 also advances. Upon the opening of the spring pressed shut-oit valve in the nozzle, the tubular plunger member 5 will be forced forwardly by the action of the coiled power spring 9, and the contents of the lubr-icator will be expelled until said shut-olf valve closes, or the rear end 8 of the tubular plunger member 5 engages the compression head 10. This same operation may be repeated until the tubular plunger member has reached the forward limit of its movement. By rotating the handle 17 in the reverse direct-ion, the tubular plunger member 5 will be returned to its original osition.

Although the construction for the lubri cator disclosed is capable of carrying out the intended purposes, it is to be understood body `relative to described;

struction may Havingfully described my invention, what claim is:

1. In a lubricator, the combination of a tubular body,y the tubular body having a rear end, a tubular plunger having a rear endslidably mounted in the tubular body, a coiled spring in the tubular plunger, a head slidably mounted in the tubular plunger` near its rear end. and means tor forcing 'the head forwardly to compress the Vcoiled spring, substantiall y as described.

2. In-,a lubricator, the combination. of a' tubularibody, the` tubular body having la rearV end', a tubular'plunger having a rear end slidably mounted in the tubular body,a lcoiled spring in the tubular plunger,' a' head slidably mounted in the tubular lplunge-r near its rear end, a rod threaded in therear end 'of theftubular body for forcing said headI forwardly for compressing the coiled spring.

and me'ansrfor preventing the rotation of said headf'and tubular plunger and tubular l each other, substantially as v3. In a lubricator, the combination of a tubular body, the tubular-"body having a rearend, a tubular plunger havinga rear y end'slidably mounted in the tubular body, a

coiled spring in thevtub'ulary plunger, a head slidably mounted in the tubular plunger near its rear end, a vrod threaded in'thefrear end of the ltubular ,body for Vforcing said head lforwardly for compressing the coiled spring, the tubular body-and tubular plunger being Vprovided with adjacent longitudinalv slots,

andthe head having a pin projecting therefrom forsliding in said slots to prevent rorod and means tary movement of said head and tubular plunger and tubular body relative to each other, substantially as described.`

4. In a lubricator, the vcombination of a tubular body, the tubular body having a rear end7 a tubular plunger having a rear end coiled springin the tubular plunger, a head slidably mounted .in the tubular plunger near its rear end, la rod threaded in the rear end slidably -mounted in the tubular body, a@

of the tubular body for forcing said head forwardly and compressing the coiled spring, the rear endV of the tubular plunger being provided with. an opening for'freely lreceiving the rod, a threaded stem extending from the head, thel stem being' threaded in said o for preventing the `rotation ot said head and lar'body relative to veach other, substantially as described.

,Y 5. In a lubriCat-or, tubular body, rear end, a tubularplungerhaving a rear end and slidably mounted in the tubular body, a coiled spring arranged Withinv the tubular plunger. a head slidably mounted in the tubular plunger' at its rear end,- a rod provided With right handv threads and threaded' in the rear end of the tubular body, tlierear end of the tubular-plunger being provided with yan opening for freely receiving therod, a stein the stem being the combination'A of a providedV with left-hand KENT LYMAN.

tubular plunger and -tubu extending 'from said head,

thel tubular body khaving a 

